EXT-7639 FIXED (Make shop button open different URLs depending on what is...

EXT-7639 FIXED (Make shop button open different URLs depending on what is selected in outfit editor) - 'Add More' panel multiple selection behavior

Implemented the following behavior: \"if multiple selection is made in the Add More panel then default marketplace home URL can be used\".

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/769/

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branch : product-engine